sheapdog420
Active Member
Made a cab but temps stay at 90 degrees steady. Had thin insulation with 400 watt cooltube, and still hot. Maybe walls made out of window screen material? Appreciate other ideas.
cost efficient material for cab
- Thread starter sheapdog420
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HealthInspector
Active Member
where do you get your intake air from?
sheapdog420
Active Member
Near floor. Out is at the top. Or are you referring to the cooltube
HealthInspector
Active Member
whats the temp of the room the cab is in? do you have seperate fans for cooltube and exhaust?
sheapdog420
Active Member
Room temp is about 60 degrees before the light turns on. Light is venting into room and raises room temp about 5 degrees. I have seperate fans for exhaust and the cooltube.
sheapdog420
Active Member
Cab is about 2.5ft x 2.5ft x 5.5ft. Only doing a personal 4 plant grow. I have 6" inline booster fans. Its working great on the exhaust for the carbon filter, as the door is made out of panda film and gets sucked in. The insulation I used is about 3/4" thick with the shiny side on the inside. Should I somehow try to exhaust my light out of the room or maybe into my furnace?
HealthInspector
Active Member
if you can run a hose from fresh air to your cooltube then exhaust and run that fan on the same schedule as your light. that should bring your temps down. 60 degrees is pretty good to work with. should have no issues if you move enough air.
sheapdog420
Active Member
So I've been researching R values for my insulation and the 3/4" foam and foil Polyurethane Insulation (Polyiso for short) has a R value of 7-8 per inch of thickness.
Whereas 3/4" plywood has a R value of .97
This very well could be my problem could it not?
Whereas 3/4" plywood has a R value of .97
This very well could be my problem could it not?
HealthInspector
Active Member
I'm pretty sure hte issue is that you have a 400 watt lamp in a space not much bigger than the reflector. Lots of heat off the lamp, not a lot of air to heat up. you need to cool the lamp down, in my opinion. i don't think the material is any where near as relevant as cooling the light. I suggest a constant fan on the cool tube, from fresh air through the tube and out to exhaust. will be the easiest way to lower the temps.
reverof
Active Member
Check out my diy inline fan, its my sig, cost $30 and works AWESOME, you can prob make a smaller version of it for your cab and would def lower temps... mine lowered temps in my 6x8x8 room8 degrees in 10 minutes.
TechnoMage
Well-Known Member
Anyway we can see a picture or two?
oakley1984
Well-Known Member
Lol, just fyi, insulating your cabinet will not help lower the temperatures, it will infact... Raise them
insulation or lack of won't solve your problem. airflow will. since your room is staying under 70, you need more air into the cab. inline fans are not great at moving air through a filter. can you remove the filter far a day? negitive preasure in a cab is a good thing to control smells but it could be because your airflow is to restricted by to small an intake. passive intakes should be double the size of the fan opening. can you enlarge it to the point your door barely gets sucked in?
sheapdog420
Active Member
reverof- Thats a great idea + rep, I already have that exact fan too.
mrmadcow- I'm gonna try your idea of increasing the passive intakes first before I proceed any further.
I think the issue is a multitude of issues.
1) Insulation
2) Small space
3) Not enough airflow
The combination of the 3 are what is keeping the temps up. I'm gonna start with airflow (couple of options), then insulation, then space.
Thanks for the ideas and insight. I'll keep you posted as I proceed.
mrmadcow- I'm gonna try your idea of increasing the passive intakes first before I proceed any further.
I think the issue is a multitude of issues.
1) Insulation
2) Small space
3) Not enough airflow
The combination of the 3 are what is keeping the temps up. I'm gonna start with airflow (couple of options), then insulation, then space.
Thanks for the ideas and insight. I'll keep you posted as I proceed.
sheapdog420
Active Member
Well I increased passive intakes and that lowered by 1degree. Then I replaced online fan with reverof's plan, and now down to 80-81. So I think im good to go.
Thanks for the help. You guys been very helpful!
Thanks for the help. You guys been very helpful!